STUDY ON THE POSSIBILITY OF OCCURRENCE OF FLUID MUD IN THE YANGTZE DEEP WATERWAY

摘要

Generally there is a higher sediment deposit rate in the navigation channel on muddy coasts so that the constant dredge is necessary. This usually means more expenditure of the port operation in those areas. In order to reduce the dredge cost, it is important to study the nautical depth, or to determine the critical unit weight of mud for navigation. The deep waterway regulation works is now under construction in the Yangtze Estuary. It is vital to study the characteristic and variation of fluid mud in the Yangtze Estuary. This paper deals with all the aspects of fluid mud in the Yangtze Estuary, including the characteristic, forming conditions and variation, nautical depth, especially analyzing the possibility of fluid mud formation in the North Passage of the Yangtze Estuary. It concludes that the fluid mud may appear in the North Passage after construction of deep waterway regulation works. This should be paid attention to.